# Math

## Recent Questions

**Math**

To find the weight of the gold in a 22 karat gold object, multiply the object's weight by 0.917. To find the weight of gold in a 14 karat gold object, multiply the object's weight by 0.583. Part 1 Which contains more gold, a 22 karat gold object or a 14 karat gold object that ...

**Math**

4x+3=5+x my answer is x=2, is this correct?

**Math**

How do you solve this? 3300 - .15 EDIT: I put this on a calculator and it says that it equals 3299.85 Is that right and if it is, what were to the steps to get this answer?

**Math**

You own 5% of Corporation A. Corporation A owns 30% of Corporation B. What percentage of Corporation B do you own through your ownership in Corporation A?

**math**

The ratio of cows to pigs to chickens on a farm was 15:14:12. Half of the chickens were sold to another farm, and then there were 56 more pigs than chickens. How many animals were on the farm in the beginning? how many chickens were sold?

**Math/Physics**

Steve (85 kg) is gliding (v ≠ 0) east on his cross-country skiing across a flat section of snow and is experiencing a wind resistance of 2 N against him. The coefficient of kinetic friction between the skis and the snow is 0.09. If the force of friction and wind resistance ...

**Math**

A goes from (0, 2) to (4, 2) B from (1, −2) to (2, 1) C from (−1, 0) to (0, 0) D from (−3, −5) to (2, −2) E from (−3, −2) to (−4, −5) F from (−1, 3) to (−3, 0) (a) A + B? (b) E − F? (c) −(B + C)? (d) Which two vectors sum to zero?

**Math**

Can anyone check this and see if I'm right? A crafts store bought 27 1/4 ounces of potpourri. The shop divides the potpourri into 2 1/2 ounce bags and sells each bag for $4.25. a. how many full 2 1/2 ounce bag of potpourri can the shop make. b. if all the bags are sold, how ...

**Math**

Mister Nails has box of accessories for Clarence he has a total of 42 objects he has 12 mouthpieces he has four times as many reasons as next raps how many of each objects does he have

**math**

how would you simplify 39x5 using distributive property

**Math**

Mali-li has 7 1/2 yd of material. Her new skirt will take 4 5/8 yd. How much material will she have left after the skirt is made? 2 7/8 My answer 2 1/8 3 1/8 3 7/8 73 in. =___ ft 776 ft 6 1/2ft this one 8ft 7 1/4

**Math**

Estimate these 14/16 + 1/5 2 0 1/2 1 This one 5 2/11 - 3 2/18 3 1 This one? 4 2 7 1/13 * 4 15/17 28 35 this one 48 40 I'm not very positive with the last two answers.

**math**

Division of rational numbers find each product 1. 1/3 * 7 A. 1/21 B. 2 1/7 C. 2 1/3 D. 3/7 I think it is B 2. -7/9 * 3/5 A. 18/35 B. 7/15 C. -18/35 D. -7/15 I think it is C 3. 1/3 divided by 5/6 A. 2/5 B. 5/2 C. 2/15 D. 5/18 I think it is C 4. 2 1/8 divided by 34 A. 51/32 B. 1...

**Math**

Rentals, two college friends rent a apartment they have to pay the landlord two months rent and a $500 security deposit when they sign the lease the total amount they pay the landlord is $2800 what is the rent for one month Help

**Math**

Are there any problems in this? -3 1/5 / -2/3 = -4 4/5 Here is the work it showed. -3 1/5 / -4 4/5=-16/5 * -3/2=-8/5 * -3/1 = -24/5= -4/5 To me, I think there is something wrong in this the answer suppose to be positive, not negative. The only thing that I am not sure is where...

**Math**

tell whether the given ordered pair is a solution of the equation y=9-2x;(-2,5) Help i kinda don't understand

**math**

after jenny spent 1/3 of her savings on a schoolbag,she had rs.780 left.find jenny saving at first.

**Math**

What is the ninth term in the following sequence? 11, 17, 23, 29 Is it 59?

**Math**

Jose invests $3,250 at 6% interest compounded annually. What will be the balance in the account after 3.5 years? Please give me the answers to the unit 5: Lesson 10: Patterns and rules unit test.

**Math**

The difference between two numbers is 4.If the sum of five times the smaller number and the bigger number is 58, what are the numbers?

**math**

$4600 at 6% annual interest for a year. How much would he pay

**Math**

Given that function f(x) = 9, x<4 2x+1, 4≤x<12 7x-4, x≥12 Is the function continuous a) as x tends to 4? b) as x tends to 12?

**math class viii**

Q.1) The volume of a right circular cone is 37.68 dm3 .If the the base is 3 dm, find (1) the height (2) the curved surface area of the cone .( Take π=3.14)

**Math**

11.4m of rope he want to divide it into equal pieces how many peace will there be 1.4 m long

**Math**

A car trvelling at the average speed of 50km/h. How much distance would it travel in 1 hour 12 minutes?

**Math**

If loga+ logb=logab show that (a+b)²-(a-b)²=4ab

**math (trigonometry)**

A=170 degree then prove that Tan A/2=-1-rot(1+Tan^2 A)/Tan A

**Math**

Let's say I had a graph for some experiment that we thought was modelled by a = bcd + g. If we perform an experiment and plot a vs. c, what do we expect the slope and intercept to be? Would intercept = g and slope = b ? If that's right, what would d represent?

**math**

The distance between two piers is S miles. Two boats started moving simultaneously at speeds R1 and R2. How can you find the distance D between them if they moved for T hours towards each other from the two piers

**Math**

A dress cost twice as much as a skirt. Mrs. Mason bought 3 dresses and 2 skirts. She gave the cashier $1000 and received $300 in change. How much did a dress cost?

**Math**

I have a rectangle shaped garden with the longer side measuring 14 m and the smaller side measuring 10m. I want to put brick path around the outside with bricks that are 50cm wide. How many bricks will i need?

**math**

Data (x,y) for the total number (in thousands) of college-bound students who took a test in the year x are approximately (11,1177), (8,1493), and (11,1664), where x=1 represents 2001 and x=8 represents 2008. Find the values a, b, and c such that the ...

**Math, word problem**

Lee walked for 20 minutes on a motorized treadmill that was set at a constant speed of 4 miles per hour. About how many miles did Lee walk on the treadmill? A. Between 1/2 and 1 B. Between 1 and 1 1/2 C. Between 1 1/2 and 2 D. Between 2 and 2 1/2 E. More than 2 1/2

**Math (Pre- Algebra) A**

Write a translation rule that maps point D(7, -3) onto point D'(2, 5).

**Math**

In a class of 32 students study Spanish(S) and 20 of the students study French(F).Calculate the number of students who study Spanish(S) but not French(F).

**math**

In a class of 32 students, all the students study Spanish(S) and 20 of the students study French(F).Calculate the number of students who study Spanish(S) but not French(F).

**Math, algebra**

in a two by 3 grid, each lattice point is one unit from its nearest neighbours. a total of 14 isosceles triangles( but not right triangles), each with an area of 1\2 u2 have only two vertices that are one unit apart in the grid. how many such half unit triangles have at least ...

**math**

if 9m+57=87 then 9(m+6)=?

**math**

Rachelle and Kayla want to rent a boat while they are at Lake Azul. Floatmore Boats charges $5.00 for insurance and $5.25 an hour. Neversink charges $6.75 an hour. You have to pay the insurance fee to rent at Floatmore and a rental for any part of the hour is charged as a full...

**Math**

Old Macdonald planted 60 acres of corn worth $11,700. If each acre yields 65 bushels of corn, what is the value of one bushel?

**math**

It takes one machine 25 minutes to pick a bale of cotton and another machine 30 minutes to compete the same job. If both machines are used, how long will it take them to pick a bale of cotton?

**Math**

When is the sum of two integers greater than the difference?

**Math**

A solid body consists of a cylinder surmounted by a hemisphere of the same radius. The total length of the body, measured along the central axis of cylinder, is 10cm. If the radius of the hemisphere is xcm,show that the volume vcm^3, of the solid body is given by v=pi x^2/3(30...

**math**

How many different pizza combinations can I make if I have 2 different types of crust, 2 cheese choices, 7 different meats, and 13 different vegetables

**Math**

Compute K(ω)=20lg(1/(1+τ⋅ω)12), as ω=1.3, τ=R⋅C, R=992 ja C=0.001. Use two decimals in your answer. K(1.3)=

**Discrete Math?**

Was wondering, anyone here know discrete math? Specifically regarding to rules of inferences?

**Math**

The cash records of Oriole Inc. show the following situations: Deposits in transit: 1. The June 30 bank reconciliation indicated that deposits in transit total $2,040. During July, the general ledger account Cash shows deposits of $14,610, but the bank statement indicates that...

**Math**

percentage increase & decrease original amount 20 decrease % _blank new amount 19 What is the formula used to get the decreased amount?

**Math-Geometry**

Starting from the point (0,0), a grasshopper makes a series of moves on the coordinate plane. The grasshopper's first move takes her to (3,4). She then proceeds via this rule: Move Rule: After a move which adds (x,y) to the grasshopper's coordinates, her next move adds either...

**sat math**

An employee's training time and meeting time cannot exceed 16 hours a month. For every hour of training there is 2 hours of meeting. There should be at least 2 hours of training every month. What is the difference between the maximum and minimum number of monthly training ...

**Math**

Dena has 30 metres of ribbon to dcorate 12 pillows.How much ribbon can she use for each pillow?

**math**

A bottle of Harvest Time Apple Juice contains 64 oz. and costs 2 bottles for $1.98. Farm Fresh Apple Juice is available in bottles that contain 1 gallon and sells for $1.88 per bottle. Which is the better buy?

**Math**

The heights of four of the starting players on the basketball team are 183 cm, 178 cm, 174 cm, and 185 cm. If the mean height of all five starting player is 182 cm, what is the height of the fifth starting player? Show your work

**Math**

I need help with this equation, but Can you also explain to me how you would get this answer? 5/13t = -9

**Math**

In parrellogram ABCD,IF DO andCO are the AngleADC angleBCD respecttively,then reflexAngleDoc is equal to

**math**

the plan of a shopping complex is drawn to a scale of 1:400. A supermarket on the plan occupies an area of 0.25m square, calculate its actual area in hectares

**Math**

Kalibasib runs 12.0 m east and then 28.0 m in a direction 30.0 degrees east of north. How far is Kalibasib from the starting point?

**Math**

Six years ago, DJ’s mother was 8 less than twice the age of DJ then. Four years from now, twice her age will be four more than thrice his age. How old is DJ now?

**Math**

Each week Rosa receives a salary of $200 plus a 6 percent commission on her total sales. To the nearest dollar, how much would Rosa have to sell in one week to earn a total of $300

**6 grade math**

wile catching fireflies, you and your friend decide to have a competition. after m minutes, you have (3m +13) fireflies and your friend has (4m+6) fireflies. a. how many fireflies are caught per minute? b. ow many fireflies caught before the competition? for a. we tried (3m+13...

**Math**

Give the domain and range of the following functions: f(x) = 1⁄4x – 7 g(x) = 3x2+ 2

**math**

-1/4+(-2/7)=? a.-15/28 b.-3/11 c.9/14 d.3/28

**math**

-6/7+6/21=? a.-4/7 b.12/49 c.-1 3/7 d.12

**Math**

Factor 81-27p is A)9(9-3p) B)27(3-p) C)27(54-p) D)27(p-3) I think A but not sure. Is there a website that explains simplifying Algebraic Expressions? Thanks for your help.

**Math**

Disclaimer: I'm not asking for an answer I'm just asking how to do this. _____________________________________________ 9-c<2or-3c>15? I'm not asking for the answer I already submitted the thing but I just want to know how to do it for future purposes, Thank you ...

**math**

Given the function f(x) = x2– 3x + 3, find the following: f(-2) = _________ f(5) = _______

**math**

Give the domain and range of the following functions: f(x) = 1⁄4x – 7 g(x) = 3x2+ 2

**math**

All the members of a construction crew work at the same pace. Six of them working together are able to pour foundation in 22 hours. How many hours would this job take if the number of workers: if the workers increased by the factor two

**math**

I’m thinking of a number that when multiplied by 8.7 gives a product of about 7.2 . Give 5 numbers to answer this question and show how your estimations are reasonable.

**Math**

Mr. Perry took his family out to eat. They ordered three meals costing $8.99 each, two sodas at $1.50 each and one cup of coffee for $1.25 . Write an expression to find the total amount the Perry family spent on dinner before taxes and tip. Afterwards, evaluate the expression.

**Math**

In a recent survey 56% of students at MacNab High School work a part time job during the school year. If there are 378 students in the school, is 125 , 200 or 560 a reasonable estimate for number of students who work part time during the school year? Explain your answer.

**math HELP PLEASE**

Meg is making necklaces out of leather string. Each necklace requires 25 centimeters of string. Meg wants to make a necklace for each member of her family so she needs a total of 7 necklaces. How many centimeters of string does Meg need? If the total cost of the string was $4....

**math**

Three friends Nick, Rachel and Ahmed have a lemonade stand. They decide to share the profits the following way. Nick gets 2/3 of the total profits. Rachel will get 1/4 of the total profits. Explain why Ahmed will get 1/12 of the total profits. Give reasons for your answer

**Math**

1. What is 2.28 x 10^-8 in standard form

**math**

A sales clerk receives a monthly salary of $800 plus a commission of 7%on all sales over $3000. What did the clerk earn the month that he sold $â¢13,300 in merchandise?

**math**

The denominator of a fraction is 20 more than the numerator of the fraction. If 5 is added to the numerator of the fraction and the denominator is unchanged, the value of the resulting fraction becomes 38. Use x as your variable. Find x.

**Math HELP PLEASE**

What was one strength of the Articles of Confederation? A it allowed states to make decisions for themselves B it gave the federal government power to impose taxes C it gave congress the authority to over turn decisions made by the president D it provided congress with a means...

**math**

a spy tracks a rocket through a telescope to determine its velocity. the rocket is traveling vertically upward from a launching pad 10,000 m away. at a certain moment the angle between the telescope and the ground is equal to pi/3 and is changin g at a rate of 0.5 rad/min. ...

**Math**

What is the side length of an equilateral triangle that has a perimeter of 24.6 cm?

**Math**

Is the equation true, false, or open? 9p + 8 = 10p + 7 I think it's true... Am I correct???

**MATH**

Gymnast Clothing manufactures expensive soccer cleats for sale to college bookstores in runs of up to 500. Its cost (in dollars) for a run of x pairs of cleats is C(x) = 2900 + 9x + 0.1x2 (0 ≤ x ≤ 500). Gymnast Clothing sells the cleats at $150 per pair. Find the revenue ...

**Math**

Fertilizer covers 5/8 square feet in 1 / 4 Hour

**math**

sam has 4/5 yards of yarn. he used 3/8 of the yarn. how many yards of yarn did he use? a. 5/8 b. 7/10 c. 3/10 d. 3/13 i dont know the answer and i need help getting the answer.

**math**

A single fair is tossed. Find the probability of obtaining a number different than 9

**Math**

A solid body consists of a cylinder surmounted by a hemisphere of the same radius. The total length of the body, measured along the central axis of cylinder, is 10cm. If the radius of the hemisphere is xcm

**math**

Divide 61 into two parts such that their product is 320

**math**

An ordinary annuity with 2,000 regular at 3% compounded annually for one year

**math's**

Manoj deposited a sum of rs64000 in a post office for 3 years compounded annually 9%/ annum.what amount will he get on maturity?

**Math simplify**

How is this positive 8. I keep getting negative -16. Simplify: -4 + -12= ?

**Math**

Can someone help with lesson 10 unit 3 solving equations?

**Math**

Which ordered pair is a solution of the equation: y= -9x + 4 A (10,-86) B (-4,-58) C (6,-41) D (-6, 57)

**Math**

What is 0.4 ten times as much as

**Math**

at lunch, lupe shared 3 1/2 small pizzas equally among his 4 friends. lupe's friend, Jon, only ate 1/2 of the pizza Lupe gave him. what fraction of a whole pizza did Jon eat?

**Math**

Can someone please help me with this question? If f(x) = 7x2 – x + 3 and h ≠ 0, find the following and simplify. a.) f(x+h) b.)( f(x+h)-f(x))/h

**Math**

Write 17/4 as a mixed number. Explain your work I'm stuck and could really use some help, this is what I got so far: First I divided 17 by 4, 4 goes into 17 four times and has a remainder of 1. What do I do after this can anyone help??

**Math**

7a+10=2a

**Math**

Rationalize the denominator of (3 * cube root of 12 - 8) / (cube root of 9 - cube root of 6). Please show steps and the full process to rationalize.

**math**

Which point is located at (– 3 , – 2)?

**Math**

Riddle: why is it always so noisy in the barn? Use this letter to solved: REZGBNESKA Thanks can't figure it out help!

**Math**

Leila will rent a car for the weekend. She can choose one of two plans. The first plan has no initial fee but costs $0.70 per mile driven. The second plan has an initial fee of $65 and costs an additional $0.50 per mile driven. How many miles would Leila need to drive for the ...